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Related Concept Videos

ortho–para-Directing Deactivators: Halogens01:24

ortho–para-Directing Deactivators: Halogens

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Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another
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ORO. The physical developer replacement?

Michael A Wood1, Tim James

  • 1The University of Teesside, School of Science and Technology, Middlesbrough, TSI 3BA, UK. mike_180385@hotmail.com

Science & Justice : Journal of the Forensic Science Society
|February 4, 2010
PubMed
Summary
This summary is machine-generated.

Oil Red O shows promise for developing latent fingerprints on porous surfaces, especially after water exposure. This new technique outperformed Physical Developer on heavily contaminated fingers but was ineffective on lightly deposited prints or accelerants.

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Area of Science:

  • Forensic Science
  • Analytical Chemistry

Background:

  • Physical Developer is the standard for developing fingerprints on porous surfaces after water exposure.
  • Emerging techniques offer potential alternatives to traditional methods.

Purpose of the Study:

  • To compare the effectiveness of Oil Red O with Physical Developer for fingerprint development.
  • To evaluate performance on various paper types, water conditions, and finger contamination levels.

Main Methods:

  • Tested Physical Developer and Oil Red O on four paper types.
  • Exposed prints to three water types and an accelerant for varying durations.
  • Used both heavily sebaceous and normal un-washed fingers for print deposition.

Main Results:

  • Oil Red O consistently yielded clearer, more detailed prints from heavily contaminated fingers.
  • Neither method showed superiority for prints from normal, un-washed fingers.
  • No prints were developed by either technique from the accelerant.

Conclusions:

  • Oil Red O is a viable alternative to Physical Developer for certain fingerprint development scenarios.
  • Further research is needed to optimize Oil Red O for lightly contaminated prints and challenging environments.